We report a novel strategy to prepare valuable nitriles and ketones through the conversion of esters under metal-free conditions. By using the I2/PCl3 system, various substrates including aliphatic and aromatic esters could react with acetonitrile and arenes to afford the desired products in good to excellent yields. This method is compatible with a number of functional groups and provides a simple
the existence of single electrontransfer in the reaction of Grignardreagents with ketones. The method involves the determination of pseudo-first order rate constants by following the rate of disappearance of the paramagnetic intermediate and relating the rate of this disappearance to the appearance of product. The reactions of methyl-, phenyl- and t-butyl-Grignard reagents with substituted benzophenones
Ring<i>tert</i>-Butylation of Benzophenones and Benzaldehyde with<i>tert</i>-Butyllithium and Thionyl Chloride
作者:George A. Olah、An-hsiang Wu、Omar Farooq
DOI:10.1055/s-1991-28416
日期:——
One-flask ring tert-butylation of benzophenones and benzaldehyde with tert-butyllithium and thionyl chloride is reported. The scope of the reaction and the suggested mechanism are discussed.
The “kinetic capture” of an acylium ion from live aluminum chloride promoted Friedel–Crafts acylation reactions
作者:Zhiliang Huang、Liqun Jin、Heyou Han、Aiwen Lei
DOI:10.1039/c3ob27094g
日期:——
AlCl3 promoted Friedel–Craftsacylation between 4-tert-butylbenzoyl chloride and mesitylene was investigated. The donor–acceptor complex was observed as the major species. Kinetic investigation demonstrated that the reaction was first-order on the donor–acceptor complex and zero-order on ArH, suggesting that the donor–acceptor complex was not the true reactive species. However, the acylium ion was
Palladium and Copper‐Catalyzed Friedel–Crafts Acylation with Activated Amides
作者:Haeun Park、Sunwoo Lee
DOI:10.1002/adsc.202300376
日期:2023.9.19
The Friedel-Craftsacylation reaction between activated amides and arenes was carried out by employing [Pd(cinnamyl)Cl]2 and Cu(OTf)2 as catalysts. A range of N-phenyl-N-tosylbenzamides, which were substituted at the phenyl ring of the benzamide moiety, underwent reaction with various arenes, such as mesitylene, toluene, anisole, 4-tert-butylbenzene, o-xylene, m-xylene, and p-xylene, affording the